Solar power generation and storage batteries at home with 0 yen equipment cost!?

Okinawa Electric Power Co., Ltd. wants to do something about oil and coal power generation, which emits a lot of CO2

Okinawa, with its beautiful seas, has many people who value nature. Of course, so is Okinawa Electric Power. Currently, the main island of Okinawa is powered by two coal power plants, two heavy oil power plants, and one state-of-the-art LNG power plant. In Okinawa, where there are few rivers, there are no hydroelectric power plants like in Honshu. In addition to using diesel generators on a number of remote islands, some are also using wind power on an experimental basis.

A power plant on the mainland of Okinawa. A state-of-the-art LNG power plant has also been introduced, but there is only one so far

Okinawa has neither nuclear power plants nor geothermal power plants using volcanic heat. The immediate challenge for Okinawa Electric Power Company is to switch from power plants that use coal and heavy oil, which emit large amounts of CO2, to LNG power plants, which emit less CO2.

CO2 emissions per unit of electricity due to differences in power generation methods. Okinawa Electric Power Co. is introducing a highly efficient "combined" type of "LNG-fired power". Just by switching to combined-type LNG-fired power, CO2 can be reduced to 50% of coal and 64% of oil (Source: Japan Atomic Energy Foundation "Nuclear and Energy Drawings")

However, Since we can't afford to rebuild the power plant, we are also making efforts to popularize solar power generation that takes advantage of the "Okinawa-ness". One of the means to do so is called Karirufu.

You may be thinking, "Sunshine because the sun shines brightly in the tropics?" However, Okinawa is on the path of typhoons every year, so the weather conditions are not so good.

The ``Okinawan style'' is that the houses are made of concrete and have several stories because they are in the path of a typhoon. Moreover, it is a flat roof made of concrete, not the triangular roof that is common in Honshu. It's like a rooftop, so to speak.

Okinawa Electric Power Co., Ltd. is trying to generate electricity by putting solar panels on the roof, which is unique to Okinawa. Even if the amount of power generated by each house is small, if the number is collected, it will become a large amount of energy.

Many houses in Okinawa are made of concrete and have flat or slanted roofs. There are few houses with triangular roofs like those on Honshu. Houses that are introducing Karirufu

For Okinawa Electric Power, there is the advantage of being able to install solar power generation without purchasing land for a huge solar power plant. be. Customers can install solar panels at home for free, get discounts on electricity bills, and get backup power equipment for power outages for free. It's a win-win service with mutual benefits.